It's an excellent game, with a solid combat system and the controls are not difficult. As far as its bosses, on the plus side, the game's Story Mode has a boss that, once you understand how to defeat it and understand the use of the Flying Homing ability, it's easy for a fighting game's boss. On the negative side, the additional modes of the game have bosses that will annihilate you. Arcana Heart is known for having the grand champion among SNK Boss type fighting game bosses: Parace L'Sia... And you have to defeat her to get all of the game's trophies.

I personally really like the game, but it'll all depend on your own tastes. I see it as THE greatest all-female fighting game though.